Any ideas why she is making this demand?

If there is stress because essential things like paying bills, food and family activities are not being properly attended too. Maybe she is not just being a drama queen.

If it is because you are paying too much attention to the heli, and not enough on her (the way it should be ) Just ignore her demand but be nicer to her.

No doubt, your marriage is important, give it careful consideration. annother reason to be carefull is divorce is often reeeeeaallly expensive, you stand to loose your wife AND your heli.